Patents by Inventor Larry K. Farmer

Larry K. Farmer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Accretion controlling tuyere
    Patent number: 5458320
    Abstract: A tuyere for refining molten metals or melting metal scrap or oxides charged into a vessel. The tuyere comprises three concentric pipes of copper or stainless steel encased in refractory. An annular stream of natural gas surrounds an annular stream of oxygen which in turn surrounds a core stream of natural gas. All three streams are expanded as they flow through the tuyere and as a result an accretion forms at the tip of the tuyere. The accretion protects the tuyere and the gas streams are controlled so that the accretion is maintained at a desired size which neither blocks the tuyere, nor permits burnback of the pipes.
    Type: Grant
    Filed: August 3, 1994
    Date of Patent: October 17, 1995
    Assignee: Gas Research Institute
    Inventors: David C. Winchester, Larry K. Farmer, Michael D. Lanyi, Charles E. Baukal, Jr.
  • Accretion controlling tuyere
    Patent number: 5431709
    Abstract: A tuyere for refining molten metals or melting metal scrap or oxides charged into a vessel. The tuyere comprises three concentric pipes of copper or stainless steel encased in refractory. An annular stream of natural gas surrounds an annular stream of oxygen which in turn surrounds a core stream of natural gas. All three streams are expanded as they flow through the tuyere and as a result an accretion forms at the tip of the tuyere. The accretion protects the tuyere and the gas streams are controlled so that the accretion is maintained at a desired size which neither blocks the tuyere, nor permits burnback of the pipes.
    Type: Grant
    Filed: September 21, 1993
    Date of Patent: July 11, 1995
    Assignee: Gas Research Institute
    Inventors: David C. Winchester, Larry K. Farmer, Michael D. Lanyi, Charles E. Baukal, Jr.